CommandObjectCommands.cpp revision f737d372a9672c9feaedf4b2cd7b16e31357d38e
1//===-- CommandObjectSource.cpp ---------------------------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10#include "CommandObjectCommands.h" 11 12// C Includes 13// C++ Includes 14// Other libraries and framework includes 15#include "llvm/ADT/StringRef.h" 16 17// Project includes 18#include "lldb/Core/Debugger.h" 19#include "lldb/Core/InputReader.h" 20#include "lldb/Core/InputReaderEZ.h" 21#include "lldb/Core/StringList.h" 22#include "lldb/Interpreter/Args.h" 23#include "lldb/Interpreter/CommandInterpreter.h" 24#include "lldb/Interpreter/CommandObjectRegexCommand.h" 25#include "lldb/Interpreter/CommandReturnObject.h" 26#include "lldb/Interpreter/Options.h" 27#include "lldb/Interpreter/ScriptInterpreter.h" 28#include "lldb/Interpreter/ScriptInterpreterPython.h" 29 30using namespace lldb; 31using namespace lldb_private; 32 33//------------------------------------------------------------------------- 34// CommandObjectCommandsSource 35//------------------------------------------------------------------------- 36 37class CommandObjectCommandsHistory : public CommandObjectParsed 38{ 39public: 40 CommandObjectCommandsHistory(CommandInterpreter &interpreter) : 41 CommandObjectParsed (interpreter, 42 "command history", 43 "Dump the history of commands in this session.", 44 NULL), 45 m_options (interpreter) 46 { 47 } 48 49 ~CommandObjectCommandsHistory () {} 50 51 virtual Options * 52 GetOptions () 53 { 54 return &m_options; 55 } 56 57protected: 58 59 class CommandOptions : public Options 60 { 61 public: 62 63 CommandOptions (CommandInterpreter &interpreter) : 64 Options (interpreter) 65 { 66 } 67 68 virtual 69 ~CommandOptions (){} 70 71 virtual Error 72 SetOptionValue (uint32_t option_idx, const char *option_arg) 73 { 74 Error error; 75 char short_option = (char) m_getopt_table[option_idx].val; 76 bool success; 77 78 switch (short_option) 79 { 80 case 'c': 81 m_end_idx = Args::StringToUInt32(option_arg, UINT_MAX, 0, &success); 82 if (!success) 83 error.SetErrorStringWithFormat("invalid value for count: %s", option_arg); 84 if (m_end_idx != 0) 85 m_end_idx--; 86 m_start_idx = 0; 87 break; 88 case 'e': 89 m_end_idx = Args::StringToUInt32(option_arg, 0, 0, &success); 90 if (!success) 91 error.SetErrorStringWithFormat("invalid value for end index: %s", option_arg); 92 break; 93 case 's': 94 m_start_idx = Args::StringToUInt32(option_arg, 0, 0, &success); 95 if (!success) 96 error.SetErrorStringWithFormat("invalid value for start index: %s", option_arg); 97 break; 98 default: 99 error.SetErrorStringWithFormat ("unrecognized option '%c'", short_option); 100 break; 101 } 102 103 return error; 104 } 105 106 void 107 OptionParsingStarting () 108 { 109 m_start_idx = 0; 110 m_end_idx = UINT_MAX; 111 } 112 113 const OptionDefinition* 114 GetDefinitions () 115 { 116 return g_option_table; 117 } 118 119 // Options table: Required for subclasses of Options. 120 121 static OptionDefinition g_option_table[]; 122 123 // Instance variables to hold the values for command options. 124 125 uint32_t m_start_idx; 126 uint32_t m_end_idx; 127 }; 128 129 bool 130 DoExecute (Args& command, CommandReturnObject &result) 131 { 132 133 m_interpreter.DumpHistory (result.GetOutputStream(), 134 m_options.m_start_idx, 135 m_options.m_end_idx); 136 return result.Succeeded(); 137 138 } 139 140 CommandOptions m_options; 141}; 142 143OptionDefinition 144CommandObjectCommandsHistory::CommandOptions::g_option_table[] = 145{ 146{ LLDB_OPT_SET_1, false, "count", 'c', required_argument, NULL, 0, eArgTypeUnsignedInteger, "How many history commands to print."}, 147{ LLDB_OPT_SET_1, false, "start-index", 's', required_argument, NULL, 0, eArgTypeUnsignedInteger, "Index at which to start printing history commands."}, 148{ LLDB_OPT_SET_1, false, "end-index", 'e', required_argument, NULL, 0, eArgTypeUnsignedInteger, "Index at which to stop printing history commands."}, 149{ 0, false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL } 150}; 151 152 153//------------------------------------------------------------------------- 154// CommandObjectCommandsSource 155//------------------------------------------------------------------------- 156 157class CommandObjectCommandsSource : public CommandObjectParsed 158{ 159public: 160 CommandObjectCommandsSource(CommandInterpreter &interpreter) : 161 CommandObjectParsed (interpreter, 162 "command source", 163 "Read in debugger commands from the file <filename> and execute them.", 164 NULL), 165 m_options (interpreter) 166 { 167 CommandArgumentEntry arg; 168 CommandArgumentData file_arg; 169 170 // Define the first (and only) variant of this arg. 171 file_arg.arg_type = eArgTypeFilename; 172 file_arg.arg_repetition = eArgRepeatPlain; 173 174 // There is only one variant this argument could be; put it into the argument entry. 175 arg.push_back (file_arg); 176 177 // Push the data for the first argument into the m_arguments vector. 178 m_arguments.push_back (arg); 179 } 180 181 ~CommandObjectCommandsSource () {} 182 183 virtual const char* 184 GetRepeatCommand (Args ¤t_command_args, uint32_t index) 185 { 186 return ""; 187 } 188 189 int 190 HandleArgumentCompletion (Args &input, 191 int &cursor_index, 192 int &cursor_char_position, 193 OptionElementVector &opt_element_vector, 194 int match_start_point, 195 int max_return_elements, 196 bool &word_complete, 197 StringList &matches) 198 { 199 std::string completion_str (input.GetArgumentAtIndex(cursor_index)); 200 completion_str.erase (cursor_char_position); 201 202 CommandCompletions::InvokeCommonCompletionCallbacks (m_interpreter, 203 CommandCompletions::eDiskFileCompletion, 204 completion_str.c_str(), 205 match_start_point, 206 max_return_elements, 207 NULL, 208 word_complete, 209 matches); 210 return matches.GetSize(); 211 } 212 213 virtual Options * 214 GetOptions () 215 { 216 return &m_options; 217 } 218 219protected: 220 221 class CommandOptions : public Options 222 { 223 public: 224 225 CommandOptions (CommandInterpreter &interpreter) : 226 Options (interpreter) 227 { 228 } 229 230 virtual 231 ~CommandOptions (){} 232 233 virtual Error 234 SetOptionValue (uint32_t option_idx, const char *option_arg) 235 { 236 Error error; 237 char short_option = (char) m_getopt_table[option_idx].val; 238 bool success; 239 240 switch (short_option) 241 { 242 case 'e': 243 m_stop_on_error = Args::StringToBoolean(option_arg, true, &success); 244 if (!success) 245 error.SetErrorStringWithFormat("invalid value for stop-on-error: %s", option_arg); 246 break; 247 case 'c': 248 m_stop_on_continue = Args::StringToBoolean(option_arg, true, &success); 249 if (!success) 250 error.SetErrorStringWithFormat("invalid value for stop-on-continue: %s", option_arg); 251 break; 252 default: 253 error.SetErrorStringWithFormat ("unrecognized option '%c'", short_option); 254 break; 255 } 256 257 return error; 258 } 259 260 void 261 OptionParsingStarting () 262 { 263 m_stop_on_error = true; 264 m_stop_on_continue = true; 265 } 266 267 const OptionDefinition* 268 GetDefinitions () 269 { 270 return g_option_table; 271 } 272 273 // Options table: Required for subclasses of Options. 274 275 static OptionDefinition g_option_table[]; 276 277 // Instance variables to hold the values for command options. 278 279 bool m_stop_on_error; 280 bool m_stop_on_continue; 281 }; 282 283 bool 284 DoExecute(Args& command, CommandReturnObject &result) 285 { 286 const int argc = command.GetArgumentCount(); 287 if (argc == 1) 288 { 289 const char *filename = command.GetArgumentAtIndex(0); 290 291 result.AppendMessageWithFormat ("Executing commands in '%s'.\n", filename); 292 293 FileSpec cmd_file (filename, true); 294 ExecutionContext *exe_ctx = NULL; // Just use the default context. 295 bool echo_commands = true; 296 bool print_results = true; 297 298 m_interpreter.HandleCommandsFromFile (cmd_file, 299 exe_ctx, 300 m_options.m_stop_on_continue, 301 m_options.m_stop_on_error, 302 echo_commands, 303 print_results, 304 eLazyBoolCalculate, 305 result); 306 } 307 else 308 { 309 result.AppendErrorWithFormat("'%s' takes exactly one executable filename argument.\n", GetCommandName()); 310 result.SetStatus (eReturnStatusFailed); 311 } 312 return result.Succeeded(); 313 314 } 315 CommandOptions m_options; 316}; 317 318OptionDefinition 319CommandObjectCommandsSource::CommandOptions::g_option_table[] = 320{ 321{ LLDB_OPT_SET_ALL, false, "stop-on-error", 'e', required_argument, NULL, 0, eArgTypeBoolean, "If true, stop executing commands on error."}, 322{ LLDB_OPT_SET_ALL, false, "stop-on-continue", 'c', required_argument, NULL, 0, eArgTypeBoolean, "If true, stop executing commands on continue."}, 323{ 0, false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL } 324}; 325 326#pragma mark CommandObjectCommandsAlias 327//------------------------------------------------------------------------- 328// CommandObjectCommandsAlias 329//------------------------------------------------------------------------- 330 331static const char *g_python_command_instructions = "Enter your Python command(s). Type 'DONE' to end.\n" 332 "You must define a Python function with this signature:\n" 333 "def my_command_impl(debugger, args, result, internal_dict):"; 334 335 336class CommandObjectCommandsAlias : public CommandObjectRaw 337{ 338 339 340public: 341 CommandObjectCommandsAlias (CommandInterpreter &interpreter) : 342 CommandObjectRaw (interpreter, 343 "command alias", 344 "Allow users to define their own debugger command abbreviations.", 345 NULL) 346 { 347 SetHelpLong( 348 "'alias' allows the user to create a short-cut or abbreviation for long \n\ 349 commands, multi-word commands, and commands that take particular options. \n\ 350 Below are some simple examples of how one might use the 'alias' command: \n\ 351 \n 'command alias sc script' // Creates the abbreviation 'sc' for the 'script' \n\ 352 // command. \n\ 353 'command alias bp breakpoint' // Creates the abbreviation 'bp' for the 'breakpoint' \n\ 354 // command. Since breakpoint commands are two-word \n\ 355 // commands, the user will still need to enter the \n\ 356 // second word after 'bp', e.g. 'bp enable' or \n\ 357 // 'bp delete'. \n\ 358 'command alias bpl breakpoint list' // Creates the abbreviation 'bpl' for the \n\ 359 // two-word command 'breakpoint list'. \n\ 360 \nAn alias can include some options for the command, with the values either \n\ 361 filled in at the time the alias is created, or specified as positional \n\ 362 arguments, to be filled in when the alias is invoked. The following example \n\ 363 shows how to create aliases with options: \n\ 364 \n\ 365 'command alias bfl breakpoint set -f %1 -l %2' \n\ 366 \nThis creates the abbreviation 'bfl' (for break-file-line), with the -f and -l \n\ 367 options already part of the alias. So if the user wants to set a breakpoint \n\ 368 by file and line without explicitly having to use the -f and -l options, the \n\ 369 user can now use 'bfl' instead. The '%1' and '%2' are positional placeholders \n\ 370 for the actual arguments that will be passed when the alias command is used. \n\ 371 The number in the placeholder refers to the position/order the actual value \n\ 372 occupies when the alias is used. All the occurrences of '%1' in the alias \n\ 373 will be replaced with the first argument, all the occurrences of '%2' in the \n\ 374 alias will be replaced with the second argument, and so on. This also allows \n\ 375 actual arguments to be used multiple times within an alias (see 'process \n\ 376 launch' example below). \n\ 377 Note: the positional arguments must substitute as whole words in the resultant\n\ 378 command, so you can't at present do something like:\n\ 379 \n\ 380 command alias bcppfl breakpoint set -f %1.cpp -l %2\n\ 381 \n\ 382 to get the file extension \".cpp\" automatically appended. For more complex\n\ 383 aliasing, use the \"command regex\" command instead.\n\ 384 \nSo in the 'bfl' case, the actual file value will be \n\ 385 filled in with the first argument following 'bfl' and the actual line number \n\ 386 value will be filled in with the second argument. The user would use this \n\ 387 alias as follows: \n\ 388 \n (lldb) command alias bfl breakpoint set -f %1 -l %2 \n\ 389 <... some time later ...> \n\ 390 (lldb) bfl my-file.c 137 \n\ 391 \nThis would be the same as if the user had entered \n\ 392 'breakpoint set -f my-file.c -l 137'. \n\ 393 \nAnother example: \n\ 394 \n (lldb) command alias pltty process launch -s -o %1 -e %1 \n\ 395 (lldb) pltty /dev/tty0 \n\ 396 // becomes 'process launch -s -o /dev/tty0 -e /dev/tty0' \n\ 397 \nIf the user always wanted to pass the same value to a particular option, the \n\ 398 alias could be defined with that value directly in the alias as a constant, \n\ 399 rather than using a positional placeholder: \n\ 400 \n command alias bl3 breakpoint set -f %1 -l 3 // Always sets a breakpoint on line \n\ 401 // 3 of whatever file is indicated. \n"); 402 403 CommandArgumentEntry arg1; 404 CommandArgumentEntry arg2; 405 CommandArgumentEntry arg3; 406 CommandArgumentData alias_arg; 407 CommandArgumentData cmd_arg; 408 CommandArgumentData options_arg; 409 410 // Define the first (and only) variant of this arg. 411 alias_arg.arg_type = eArgTypeAliasName; 412 alias_arg.arg_repetition = eArgRepeatPlain; 413 414 // There is only one variant this argument could be; put it into the argument entry. 415 arg1.push_back (alias_arg); 416 417 // Define the first (and only) variant of this arg. 418 cmd_arg.arg_type = eArgTypeCommandName; 419 cmd_arg.arg_repetition = eArgRepeatPlain; 420 421 // There is only one variant this argument could be; put it into the argument entry. 422 arg2.push_back (cmd_arg); 423 424 // Define the first (and only) variant of this arg. 425 options_arg.arg_type = eArgTypeAliasOptions; 426 options_arg.arg_repetition = eArgRepeatOptional; 427 428 // There is only one variant this argument could be; put it into the argument entry. 429 arg3.push_back (options_arg); 430 431 // Push the data for the first argument into the m_arguments vector. 432 m_arguments.push_back (arg1); 433 m_arguments.push_back (arg2); 434 m_arguments.push_back (arg3); 435 } 436 437 ~CommandObjectCommandsAlias () 438 { 439 } 440 441protected: 442 virtual bool 443 DoExecute (const char *raw_command_line, CommandReturnObject &result) 444 { 445 Args args (raw_command_line); 446 std::string raw_command_string (raw_command_line); 447 448 size_t argc = args.GetArgumentCount(); 449 450 if (argc < 2) 451 { 452 result.AppendError ("'alias' requires at least two arguments"); 453 result.SetStatus (eReturnStatusFailed); 454 return false; 455 } 456 457 // Get the alias command. 458 459 const std::string alias_command = args.GetArgumentAtIndex (0); 460 461 // Strip the new alias name off 'raw_command_string' (leave it on args, which gets passed to 'Execute', which 462 // does the stripping itself. 463 size_t pos = raw_command_string.find (alias_command); 464 if (pos == 0) 465 { 466 raw_command_string = raw_command_string.substr (alias_command.size()); 467 pos = raw_command_string.find_first_not_of (' '); 468 if ((pos != std::string::npos) && (pos > 0)) 469 raw_command_string = raw_command_string.substr (pos); 470 } 471 else 472 { 473 result.AppendError ("Error parsing command string. No alias created."); 474 result.SetStatus (eReturnStatusFailed); 475 return false; 476 } 477 478 479 // Verify that the command is alias-able. 480 if (m_interpreter.CommandExists (alias_command.c_str())) 481 { 482 result.AppendErrorWithFormat ("'%s' is a permanent debugger command and cannot be redefined.\n", 483 alias_command.c_str()); 484 result.SetStatus (eReturnStatusFailed); 485 return false; 486 } 487 488 // Get CommandObject that is being aliased. The command name is read from the front of raw_command_string. 489 // raw_command_string is returned with the name of the command object stripped off the front. 490 CommandObject *cmd_obj = m_interpreter.GetCommandObjectForCommand (raw_command_string); 491 492 if (!cmd_obj) 493 { 494 result.AppendErrorWithFormat ("invalid command given to 'alias'. '%s' does not begin with a valid command." 495 " No alias created.", raw_command_string.c_str()); 496 result.SetStatus (eReturnStatusFailed); 497 return false; 498 } 499 else if (!cmd_obj->WantsRawCommandString ()) 500 { 501 // Note that args was initialized with the original command, and has not been updated to this point. 502 // Therefore can we pass it to the version of Execute that does not need/expect raw input in the alias. 503 return HandleAliasingNormalCommand (args, result); 504 } 505 else 506 { 507 return HandleAliasingRawCommand (alias_command, raw_command_string, *cmd_obj, result); 508 } 509 return result.Succeeded(); 510 } 511 512 bool 513 HandleAliasingRawCommand (const std::string &alias_command, std::string &raw_command_string, CommandObject &cmd_obj, CommandReturnObject &result) 514 { 515 // Verify & handle any options/arguments passed to the alias command 516 517 OptionArgVectorSP option_arg_vector_sp = OptionArgVectorSP (new OptionArgVector); 518 OptionArgVector *option_arg_vector = option_arg_vector_sp.get(); 519 520 CommandObjectSP cmd_obj_sp = m_interpreter.GetCommandSPExact (cmd_obj.GetCommandName(), false); 521 522 if (!m_interpreter.ProcessAliasOptionsArgs (cmd_obj_sp, raw_command_string.c_str(), option_arg_vector_sp)) 523 { 524 result.AppendError ("Unable to create requested alias.\n"); 525 result.SetStatus (eReturnStatusFailed); 526 return false; 527 } 528 529 // Create the alias 530 if (m_interpreter.AliasExists (alias_command.c_str()) 531 || m_interpreter.UserCommandExists (alias_command.c_str())) 532 { 533 OptionArgVectorSP temp_option_arg_sp (m_interpreter.GetAliasOptions (alias_command.c_str())); 534 if (temp_option_arg_sp.get()) 535 { 536 if (option_arg_vector->size() == 0) 537 m_interpreter.RemoveAliasOptions (alias_command.c_str()); 538 } 539 result.AppendWarningWithFormat ("Overwriting existing definition for '%s'.\n", 540 alias_command.c_str()); 541 } 542 543 if (cmd_obj_sp) 544 { 545 m_interpreter.AddAlias (alias_command.c_str(), cmd_obj_sp); 546 if (option_arg_vector->size() > 0) 547 m_interpreter.AddOrReplaceAliasOptions (alias_command.c_str(), option_arg_vector_sp); 548 result.SetStatus (eReturnStatusSuccessFinishNoResult); 549 } 550 else 551 { 552 result.AppendError ("Unable to create requested alias.\n"); 553 result.SetStatus (eReturnStatusFailed); 554 } 555 return result.Succeeded (); 556 } 557 558 bool 559 HandleAliasingNormalCommand (Args& args, CommandReturnObject &result) 560 { 561 size_t argc = args.GetArgumentCount(); 562 563 if (argc < 2) 564 { 565 result.AppendError ("'alias' requires at least two arguments"); 566 result.SetStatus (eReturnStatusFailed); 567 return false; 568 } 569 570 const std::string alias_command = args.GetArgumentAtIndex(0); 571 const std::string actual_command = args.GetArgumentAtIndex(1); 572 573 args.Shift(); // Shift the alias command word off the argument vector. 574 args.Shift(); // Shift the old command word off the argument vector. 575 576 // Verify that the command is alias'able, and get the appropriate command object. 577 578 if (m_interpreter.CommandExists (alias_command.c_str())) 579 { 580 result.AppendErrorWithFormat ("'%s' is a permanent debugger command and cannot be redefined.\n", 581 alias_command.c_str()); 582 result.SetStatus (eReturnStatusFailed); 583 } 584 else 585 { 586 CommandObjectSP command_obj_sp(m_interpreter.GetCommandSPExact (actual_command.c_str(), true)); 587 CommandObjectSP subcommand_obj_sp; 588 bool use_subcommand = false; 589 if (command_obj_sp.get()) 590 { 591 CommandObject *cmd_obj = command_obj_sp.get(); 592 CommandObject *sub_cmd_obj = NULL; 593 OptionArgVectorSP option_arg_vector_sp = OptionArgVectorSP (new OptionArgVector); 594 OptionArgVector *option_arg_vector = option_arg_vector_sp.get(); 595 596 while (cmd_obj->IsMultiwordObject() && args.GetArgumentCount() > 0) 597 { 598 if (argc >= 3) 599 { 600 const std::string sub_command = args.GetArgumentAtIndex(0); 601 assert (sub_command.length() != 0); 602 subcommand_obj_sp = 603 (((CommandObjectMultiword *) cmd_obj)->GetSubcommandSP (sub_command.c_str())); 604 if (subcommand_obj_sp.get()) 605 { 606 sub_cmd_obj = subcommand_obj_sp.get(); 607 use_subcommand = true; 608 args.Shift(); // Shift the sub_command word off the argument vector. 609 cmd_obj = sub_cmd_obj; 610 } 611 else 612 { 613 result.AppendErrorWithFormat("'%s' is not a valid sub-command of '%s'. " 614 "Unable to create alias.\n", 615 sub_command.c_str(), actual_command.c_str()); 616 result.SetStatus (eReturnStatusFailed); 617 return false; 618 } 619 } 620 } 621 622 // Verify & handle any options/arguments passed to the alias command 623 624 if (args.GetArgumentCount () > 0) 625 { 626 CommandObjectSP tmp_sp = m_interpreter.GetCommandSPExact (cmd_obj->GetCommandName(), false); 627 if (use_subcommand) 628 tmp_sp = m_interpreter.GetCommandSPExact (sub_cmd_obj->GetCommandName(), false); 629 630 std::string args_string; 631 args.GetCommandString (args_string); 632 633 if (!m_interpreter.ProcessAliasOptionsArgs (tmp_sp, args_string.c_str(), option_arg_vector_sp)) 634 { 635 result.AppendError ("Unable to create requested alias.\n"); 636 result.SetStatus (eReturnStatusFailed); 637 return false; 638 } 639 } 640 641 // Create the alias. 642 643 if (m_interpreter.AliasExists (alias_command.c_str()) 644 || m_interpreter.UserCommandExists (alias_command.c_str())) 645 { 646 OptionArgVectorSP tmp_option_arg_sp (m_interpreter.GetAliasOptions (alias_command.c_str())); 647 if (tmp_option_arg_sp.get()) 648 { 649 if (option_arg_vector->size() == 0) 650 m_interpreter.RemoveAliasOptions (alias_command.c_str()); 651 } 652 result.AppendWarningWithFormat ("Overwriting existing definition for '%s'.\n", 653 alias_command.c_str()); 654 } 655 656 if (use_subcommand) 657 m_interpreter.AddAlias (alias_command.c_str(), subcommand_obj_sp); 658 else 659 m_interpreter.AddAlias (alias_command.c_str(), command_obj_sp); 660 if (option_arg_vector->size() > 0) 661 m_interpreter.AddOrReplaceAliasOptions (alias_command.c_str(), option_arg_vector_sp); 662 result.SetStatus (eReturnStatusSuccessFinishNoResult); 663 } 664 else 665 { 666 result.AppendErrorWithFormat ("'%s' is not an existing command.\n", actual_command.c_str()); 667 result.SetStatus (eReturnStatusFailed); 668 return false; 669 } 670 } 671 672 return result.Succeeded(); 673 } 674 675}; 676 677#pragma mark CommandObjectCommandsUnalias 678//------------------------------------------------------------------------- 679// CommandObjectCommandsUnalias 680//------------------------------------------------------------------------- 681 682class CommandObjectCommandsUnalias : public CommandObjectParsed 683{ 684public: 685 CommandObjectCommandsUnalias (CommandInterpreter &interpreter) : 686 CommandObjectParsed (interpreter, 687 "command unalias", 688 "Allow the user to remove/delete a user-defined command abbreviation.", 689 NULL) 690 { 691 CommandArgumentEntry arg; 692 CommandArgumentData alias_arg; 693 694 // Define the first (and only) variant of this arg. 695 alias_arg.arg_type = eArgTypeAliasName; 696 alias_arg.arg_repetition = eArgRepeatPlain; 697 698 // There is only one variant this argument could be; put it into the argument entry. 699 arg.push_back (alias_arg); 700 701 // Push the data for the first argument into the m_arguments vector. 702 m_arguments.push_back (arg); 703 } 704 705 ~CommandObjectCommandsUnalias() 706 { 707 } 708 709protected: 710 bool 711 DoExecute (Args& args, CommandReturnObject &result) 712 { 713 CommandObject::CommandMap::iterator pos; 714 CommandObject *cmd_obj; 715 716 if (args.GetArgumentCount() != 0) 717 { 718 const char *command_name = args.GetArgumentAtIndex(0); 719 cmd_obj = m_interpreter.GetCommandObject(command_name); 720 if (cmd_obj) 721 { 722 if (m_interpreter.CommandExists (command_name)) 723 { 724 result.AppendErrorWithFormat ("'%s' is a permanent debugger command and cannot be removed.\n", 725 command_name); 726 result.SetStatus (eReturnStatusFailed); 727 } 728 else 729 { 730 731 if (m_interpreter.RemoveAlias (command_name) == false) 732 { 733 if (m_interpreter.AliasExists (command_name)) 734 result.AppendErrorWithFormat ("Error occurred while attempting to unalias '%s'.\n", 735 command_name); 736 else 737 result.AppendErrorWithFormat ("'%s' is not an existing alias.\n", command_name); 738 result.SetStatus (eReturnStatusFailed); 739 } 740 else 741 result.SetStatus (eReturnStatusSuccessFinishNoResult); 742 } 743 } 744 else 745 { 746 result.AppendErrorWithFormat ("'%s' is not a known command.\nTry 'help' to see a " 747 "current list of commands.\n", 748 command_name); 749 result.SetStatus (eReturnStatusFailed); 750 } 751 } 752 else 753 { 754 result.AppendError ("must call 'unalias' with a valid alias"); 755 result.SetStatus (eReturnStatusFailed); 756 } 757 758 return result.Succeeded(); 759 } 760}; 761 762//------------------------------------------------------------------------- 763// CommandObjectCommandsAddRegex 764//------------------------------------------------------------------------- 765#pragma mark CommandObjectCommandsAddRegex 766 767class CommandObjectCommandsAddRegex : public CommandObjectParsed 768{ 769public: 770 CommandObjectCommandsAddRegex (CommandInterpreter &interpreter) : 771 CommandObjectParsed (interpreter, 772 "command regex", 773 "Allow the user to create a regular expression command.", 774 "command regex <cmd-name> [s/<regex>/<subst>/ ...]"), 775 m_options (interpreter) 776 { 777 SetHelpLong( 778"This command allows the user to create powerful regular expression commands\n" 779"with substitutions. The regular expressions and substitutions are specified\n" 780"using the regular exression substitution format of:\n" 781"\n" 782" s/<regex>/<subst>/\n" 783"\n" 784"<regex> is a regular expression that can use parenthesis to capture regular\n" 785"expression input and substitute the captured matches in the output using %1\n" 786"for the first match, %2 for the second, and so on.\n" 787"\n" 788"The regular expressions can all be specified on the command line if more than\n" 789"one argument is provided. If just the command name is provided on the command\n" 790"line, then the regular expressions and substitutions can be entered on separate\n" 791" lines, followed by an empty line to terminate the command definition.\n" 792"\n" 793"EXAMPLES\n" 794"\n" 795"The following example will define a regular expression command named 'f' that\n" 796"will call 'finish' if there are no arguments, or 'frame select <frame-idx>' if\n" 797"a number follows 'f':\n" 798"\n" 799" (lldb) command regex f s/^$/finish/ 's/([0-9]+)/frame select %1/'\n" 800"\n" 801 ); 802 } 803 804 ~CommandObjectCommandsAddRegex() 805 { 806 } 807 808 809protected: 810 bool 811 DoExecute (Args& command, CommandReturnObject &result) 812 { 813 const size_t argc = command.GetArgumentCount(); 814 if (argc == 0) 815 { 816 result.AppendError ("usage: 'command regex <command-name> [s/<regex1>/<subst1>/ s/<regex2>/<subst2>/ ...]'\n"); 817 result.SetStatus (eReturnStatusFailed); 818 } 819 else 820 { 821 Error error; 822 const char *name = command.GetArgumentAtIndex(0); 823 m_regex_cmd_ap.reset (new CommandObjectRegexCommand (m_interpreter, 824 name, 825 m_options.GetHelp (), 826 m_options.GetSyntax (), 827 10)); 828 829 if (argc == 1) 830 { 831 InputReaderSP reader_sp (new InputReader(m_interpreter.GetDebugger())); 832 if (reader_sp) 833 { 834 error =reader_sp->Initialize (CommandObjectCommandsAddRegex::InputReaderCallback, 835 this, // baton 836 eInputReaderGranularityLine, // token size, to pass to callback function 837 NULL, // end token 838 "> ", // prompt 839 true); // echo input 840 if (error.Success()) 841 { 842 m_interpreter.GetDebugger().PushInputReader (reader_sp); 843 result.SetStatus (eReturnStatusSuccessFinishNoResult); 844 return true; 845 } 846 } 847 } 848 else 849 { 850 for (size_t arg_idx = 1; arg_idx < argc; ++arg_idx) 851 { 852 llvm::StringRef arg_strref (command.GetArgumentAtIndex(arg_idx)); 853 error = AppendRegexSubstitution (arg_strref); 854 if (error.Fail()) 855 break; 856 } 857 858 if (error.Success()) 859 { 860 AddRegexCommandToInterpreter(); 861 } 862 } 863 if (error.Fail()) 864 { 865 result.AppendError (error.AsCString()); 866 result.SetStatus (eReturnStatusFailed); 867 } 868 } 869 870 return result.Succeeded(); 871 } 872 873 Error 874 AppendRegexSubstitution (const llvm::StringRef ®ex_sed) 875 { 876 Error error; 877 878 if (m_regex_cmd_ap.get() == NULL) 879 { 880 error.SetErrorStringWithFormat("invalid regular expression command object for: '%.*s'", 881 (int)regex_sed.size(), 882 regex_sed.data()); 883 return error; 884 } 885 886 size_t regex_sed_size = regex_sed.size(); 887 888 if (regex_sed_size <= 1) 889 { 890 error.SetErrorStringWithFormat("regular expression substitution string is too short: '%.*s'", 891 (int)regex_sed.size(), 892 regex_sed.data()); 893 return error; 894 } 895 896 if (regex_sed[0] != 's') 897 { 898 error.SetErrorStringWithFormat("regular expression substitution string doesn't start with 's': '%.*s'", 899 (int)regex_sed.size(), 900 regex_sed.data()); 901 return error; 902 } 903 const size_t first_separator_char_pos = 1; 904 // use the char that follows 's' as the regex separator character 905 // so we can have "s/<regex>/<subst>/" or "s|<regex>|<subst>|" 906 const char separator_char = regex_sed[first_separator_char_pos]; 907 const size_t second_separator_char_pos = regex_sed.find (separator_char, first_separator_char_pos + 1); 908 909 if (second_separator_char_pos == std::string::npos) 910 { 911 error.SetErrorStringWithFormat("missing second '%c' separator char after '%.*s'", 912 separator_char, 913 (int)(regex_sed.size() - first_separator_char_pos - 1), 914 regex_sed.data() + (first_separator_char_pos + 1)); 915 return error; 916 } 917 918 const size_t third_separator_char_pos = regex_sed.find (separator_char, second_separator_char_pos + 1); 919 920 if (third_separator_char_pos == std::string::npos) 921 { 922 error.SetErrorStringWithFormat("missing third '%c' separator char after '%.*s'", 923 separator_char, 924 (int)(regex_sed.size() - second_separator_char_pos - 1), 925 regex_sed.data() + (second_separator_char_pos + 1)); 926 return error; 927 } 928 929 if (third_separator_char_pos != regex_sed_size - 1) 930 { 931 // Make sure that everything that follows the last regex 932 // separator char 933 if (regex_sed.find_first_not_of("\t\n\v\f\r ", third_separator_char_pos + 1) != std::string::npos) 934 { 935 error.SetErrorStringWithFormat("extra data found after the '%.*s' regular expression substitution string: '%.*s'", 936 (int)third_separator_char_pos + 1, 937 regex_sed.data(), 938 (int)(regex_sed.size() - third_separator_char_pos - 1), 939 regex_sed.data() + (third_separator_char_pos + 1)); 940 return error; 941 } 942 943 } 944 else if (first_separator_char_pos + 1 == second_separator_char_pos) 945 { 946 error.SetErrorStringWithFormat("<regex> can't be empty in 's%c<regex>%c<subst>%c' string: '%.*s'", 947 separator_char, 948 separator_char, 949 separator_char, 950 (int)regex_sed.size(), 951 regex_sed.data()); 952 return error; 953 } 954 else if (second_separator_char_pos + 1 == third_separator_char_pos) 955 { 956 error.SetErrorStringWithFormat("<subst> can't be empty in 's%c<regex>%c<subst>%c' string: '%.*s'", 957 separator_char, 958 separator_char, 959 separator_char, 960 (int)regex_sed.size(), 961 regex_sed.data()); 962 return error; 963 } 964 std::string regex(regex_sed.substr(first_separator_char_pos + 1, second_separator_char_pos - first_separator_char_pos - 1)); 965 std::string subst(regex_sed.substr(second_separator_char_pos + 1, third_separator_char_pos - second_separator_char_pos - 1)); 966 m_regex_cmd_ap->AddRegexCommand (regex.c_str(), 967 subst.c_str()); 968 return error; 969 } 970 971 void 972 AddRegexCommandToInterpreter() 973 { 974 if (m_regex_cmd_ap.get()) 975 { 976 if (m_regex_cmd_ap->HasRegexEntries()) 977 { 978 CommandObjectSP cmd_sp (m_regex_cmd_ap.release()); 979 m_interpreter.AddCommand(cmd_sp->GetCommandName(), cmd_sp, true); 980 } 981 } 982 } 983 984 void 985 InputReaderDidCancel() 986 { 987 m_regex_cmd_ap.reset(); 988 } 989 990 static size_t 991 InputReaderCallback (void *baton, 992 InputReader &reader, 993 lldb::InputReaderAction notification, 994 const char *bytes, 995 size_t bytes_len) 996 { 997 CommandObjectCommandsAddRegex *add_regex_cmd = (CommandObjectCommandsAddRegex *) baton; 998 bool batch_mode = reader.GetDebugger().GetCommandInterpreter().GetBatchCommandMode(); 999 1000 switch (notification) 1001 { 1002 case eInputReaderActivate: 1003 if (!batch_mode) 1004 { 1005 StreamSP out_stream = reader.GetDebugger().GetAsyncOutputStream (); 1006 out_stream->Printf("%s\n", "Enter regular expressions in the form 's/<regex>/<subst>/' and terminate with an empty line:"); 1007 out_stream->Flush(); 1008 } 1009 break; 1010 case eInputReaderReactivate: 1011 break; 1012 1013 case eInputReaderDeactivate: 1014 break; 1015 1016 case eInputReaderAsynchronousOutputWritten: 1017 break; 1018 1019 case eInputReaderGotToken: 1020 while (bytes_len > 0 && (bytes[bytes_len-1] == '\r' || bytes[bytes_len-1] == '\n')) 1021 --bytes_len; 1022 if (bytes_len == 0) 1023 reader.SetIsDone(true); 1024 else if (bytes) 1025 { 1026 llvm::StringRef bytes_strref (bytes, bytes_len); 1027 Error error (add_regex_cmd->AppendRegexSubstitution (bytes_strref)); 1028 if (error.Fail()) 1029 { 1030 if (!batch_mode) 1031 { 1032 StreamSP out_stream = reader.GetDebugger().GetAsyncOutputStream(); 1033 out_stream->Printf("error: %s\n", error.AsCString()); 1034 out_stream->Flush(); 1035 } 1036 add_regex_cmd->InputReaderDidCancel (); 1037 reader.SetIsDone (true); 1038 } 1039 } 1040 break; 1041 1042 case eInputReaderInterrupt: 1043 { 1044 reader.SetIsDone (true); 1045 if (!batch_mode) 1046 { 1047 StreamSP out_stream = reader.GetDebugger().GetAsyncOutputStream(); 1048 out_stream->PutCString("Regular expression command creations was cancelled.\n"); 1049 out_stream->Flush(); 1050 } 1051 add_regex_cmd->InputReaderDidCancel (); 1052 } 1053 break; 1054 1055 case eInputReaderEndOfFile: 1056 reader.SetIsDone (true); 1057 break; 1058 1059 case eInputReaderDone: 1060 add_regex_cmd->AddRegexCommandToInterpreter(); 1061 break; 1062 } 1063 1064 return bytes_len; 1065 } 1066 1067private: 1068 std::auto_ptr<CommandObjectRegexCommand> m_regex_cmd_ap; 1069 1070 class CommandOptions : public Options 1071 { 1072 public: 1073 1074 CommandOptions (CommandInterpreter &interpreter) : 1075 Options (interpreter) 1076 { 1077 } 1078 1079 virtual 1080 ~CommandOptions (){} 1081 1082 virtual Error 1083 SetOptionValue (uint32_t option_idx, const char *option_arg) 1084 { 1085 Error error; 1086 char short_option = (char) m_getopt_table[option_idx].val; 1087 1088 switch (short_option) 1089 { 1090 case 'h': 1091 m_help.assign (option_arg); 1092 break; 1093 case 's': 1094 m_syntax.assign (option_arg); 1095 break; 1096 1097 default: 1098 error.SetErrorStringWithFormat ("unrecognized option '%c'", short_option); 1099 break; 1100 } 1101 1102 return error; 1103 } 1104 1105 void 1106 OptionParsingStarting () 1107 { 1108 m_help.clear(); 1109 m_syntax.clear(); 1110 } 1111 1112 const OptionDefinition* 1113 GetDefinitions () 1114 { 1115 return g_option_table; 1116 } 1117 1118 // Options table: Required for subclasses of Options. 1119 1120 static OptionDefinition g_option_table[]; 1121 1122 const char * 1123 GetHelp () 1124 { 1125 if (m_help.empty()) 1126 return NULL; 1127 return m_help.c_str(); 1128 } 1129 const char * 1130 GetSyntax () 1131 { 1132 if (m_syntax.empty()) 1133 return NULL; 1134 return m_syntax.c_str(); 1135 } 1136 // Instance variables to hold the values for command options. 1137 protected: 1138 std::string m_help; 1139 std::string m_syntax; 1140 }; 1141 1142 virtual Options * 1143 GetOptions () 1144 { 1145 return &m_options; 1146 } 1147 1148 CommandOptions m_options; 1149}; 1150 1151OptionDefinition 1152CommandObjectCommandsAddRegex::CommandOptions::g_option_table[] = 1153{ 1154{ LLDB_OPT_SET_1, false, "help" , 'h', required_argument, NULL, 0, eArgTypeNone, "The help text to display for this command."}, 1155{ LLDB_OPT_SET_1, false, "syntax", 's', required_argument, NULL, 0, eArgTypeNone, "A syntax string showing the typical usage syntax."}, 1156{ 0 , false, NULL , 0 , 0 , NULL, 0, eArgTypeNone, NULL } 1157}; 1158 1159 1160class CommandObjectPythonFunction : public CommandObjectRaw 1161{ 1162private: 1163 std::string m_function_name; 1164 ScriptedCommandSynchronicity m_synchro; 1165 bool m_fetched_help_long; 1166 1167public: 1168 1169 CommandObjectPythonFunction (CommandInterpreter &interpreter, 1170 std::string name, 1171 std::string funct, 1172 ScriptedCommandSynchronicity synch) : 1173 CommandObjectRaw (interpreter, 1174 name.c_str(), 1175 (std::string("Run Python function ") + funct).c_str(), 1176 NULL), 1177 m_function_name(funct), 1178 m_synchro(synch), 1179 m_fetched_help_long(false) 1180 { 1181 } 1182 1183 virtual 1184 ~CommandObjectPythonFunction () 1185 { 1186 } 1187 1188 virtual bool 1189 IsRemovable () const 1190 { 1191 return true; 1192 } 1193 1194 const std::string& 1195 GetFunctionName () 1196 { 1197 return m_function_name; 1198 } 1199 1200 ScriptedCommandSynchronicity 1201 GetSynchronicity () 1202 { 1203 return m_synchro; 1204 } 1205 1206 virtual const char * 1207 GetHelpLong () 1208 { 1209 if (!m_fetched_help_long) 1210 { 1211 ScriptInterpreter* scripter = m_interpreter.GetScriptInterpreter(); 1212 if (scripter) 1213 { 1214 std::string docstring; 1215 m_fetched_help_long = scripter->GetDocumentationForItem(m_function_name.c_str(),docstring); 1216 if (!docstring.empty()) 1217 SetHelpLong(docstring); 1218 } 1219 } 1220 return CommandObjectRaw::GetHelpLong(); 1221 } 1222 1223protected: 1224 virtual bool 1225 DoExecute (const char *raw_command_line, CommandReturnObject &result) 1226 { 1227 ScriptInterpreter* scripter = m_interpreter.GetScriptInterpreter(); 1228 1229 Error error; 1230 1231 result.SetStatus(eReturnStatusInvalid); 1232 1233 if (!scripter || scripter->RunScriptBasedCommand(m_function_name.c_str(), 1234 raw_command_line, 1235 m_synchro, 1236 result, 1237 error) == false) 1238 { 1239 result.AppendError(error.AsCString()); 1240 result.SetStatus(eReturnStatusFailed); 1241 } 1242 else 1243 { 1244 // Don't change the status if the command already set it... 1245 if (result.GetStatus() == eReturnStatusInvalid) 1246 { 1247 if (result.GetOutputData() == NULL || result.GetOutputData()[0] == '\0') 1248 result.SetStatus(eReturnStatusSuccessFinishNoResult); 1249 else 1250 result.SetStatus(eReturnStatusSuccessFinishResult); 1251 } 1252 } 1253 1254 return result.Succeeded(); 1255 } 1256 1257}; 1258 1259//------------------------------------------------------------------------- 1260// CommandObjectCommandsScriptImport 1261//------------------------------------------------------------------------- 1262 1263class CommandObjectCommandsScriptImport : public CommandObjectParsed 1264{ 1265public: 1266 CommandObjectCommandsScriptImport (CommandInterpreter &interpreter) : 1267 CommandObjectParsed (interpreter, 1268 "command script import", 1269 "Import a scripting module in LLDB.", 1270 NULL), 1271 m_options(interpreter) 1272 { 1273 CommandArgumentEntry arg1; 1274 CommandArgumentData cmd_arg; 1275 1276 // Define the first (and only) variant of this arg. 1277 cmd_arg.arg_type = eArgTypeFilename; 1278 cmd_arg.arg_repetition = eArgRepeatPlain; 1279 1280 // There is only one variant this argument could be; put it into the argument entry. 1281 arg1.push_back (cmd_arg); 1282 1283 // Push the data for the first argument into the m_arguments vector. 1284 m_arguments.push_back (arg1); 1285 } 1286 1287 ~CommandObjectCommandsScriptImport () 1288 { 1289 } 1290 1291 int 1292 HandleArgumentCompletion (Args &input, 1293 int &cursor_index, 1294 int &cursor_char_position, 1295 OptionElementVector &opt_element_vector, 1296 int match_start_point, 1297 int max_return_elements, 1298 bool &word_complete, 1299 StringList &matches) 1300 { 1301 std::string completion_str (input.GetArgumentAtIndex(cursor_index)); 1302 completion_str.erase (cursor_char_position); 1303 1304 CommandCompletions::InvokeCommonCompletionCallbacks (m_interpreter, 1305 CommandCompletions::eDiskFileCompletion, 1306 completion_str.c_str(), 1307 match_start_point, 1308 max_return_elements, 1309 NULL, 1310 word_complete, 1311 matches); 1312 return matches.GetSize(); 1313 } 1314 1315 virtual Options * 1316 GetOptions () 1317 { 1318 return &m_options; 1319 } 1320 1321protected: 1322 1323 class CommandOptions : public Options 1324 { 1325 public: 1326 1327 CommandOptions (CommandInterpreter &interpreter) : 1328 Options (interpreter) 1329 { 1330 } 1331 1332 virtual 1333 ~CommandOptions (){} 1334 1335 virtual Error 1336 SetOptionValue (uint32_t option_idx, const char *option_arg) 1337 { 1338 Error error; 1339 char short_option = (char) m_getopt_table[option_idx].val; 1340 1341 switch (short_option) 1342 { 1343 case 'r': 1344 m_allow_reload = true; 1345 break; 1346 default: 1347 error.SetErrorStringWithFormat ("unrecognized option '%c'", short_option); 1348 break; 1349 } 1350 1351 return error; 1352 } 1353 1354 void 1355 OptionParsingStarting () 1356 { 1357 m_allow_reload = false; 1358 } 1359 1360 const OptionDefinition* 1361 GetDefinitions () 1362 { 1363 return g_option_table; 1364 } 1365 1366 // Options table: Required for subclasses of Options. 1367 1368 static OptionDefinition g_option_table[]; 1369 1370 // Instance variables to hold the values for command options. 1371 1372 bool m_allow_reload; 1373 }; 1374 1375 bool 1376 DoExecute (Args& command, CommandReturnObject &result) 1377 { 1378 1379 if (m_interpreter.GetDebugger().GetScriptLanguage() != lldb::eScriptLanguagePython) 1380 { 1381 result.AppendError ("only scripting language supported for module importing is currently Python"); 1382 result.SetStatus (eReturnStatusFailed); 1383 return false; 1384 } 1385 1386 size_t argc = command.GetArgumentCount(); 1387 1388 if (argc != 1) 1389 { 1390 result.AppendError ("'command script import' requires one argument"); 1391 result.SetStatus (eReturnStatusFailed); 1392 return false; 1393 } 1394 1395 std::string path = command.GetArgumentAtIndex(0); 1396 Error error; 1397 1398 if (m_interpreter.GetScriptInterpreter()->LoadScriptingModule(path.c_str(), 1399 m_options.m_allow_reload, 1400 error)) 1401 { 1402 result.SetStatus (eReturnStatusSuccessFinishNoResult); 1403 } 1404 else 1405 { 1406 result.AppendErrorWithFormat("module importing failed: %s", error.AsCString()); 1407 result.SetStatus (eReturnStatusFailed); 1408 } 1409 1410 return result.Succeeded(); 1411 } 1412 1413 CommandOptions m_options; 1414}; 1415 1416OptionDefinition 1417CommandObjectCommandsScriptImport::CommandOptions::g_option_table[] = 1418{ 1419 { LLDB_OPT_SET_1, false, "allow-reload", 'r', no_argument, NULL, 0, eArgTypeNone, "Allow the script to be loaded even if it was already loaded before (for Python, the __lldb_init_module function will be called again, but the module will not be reloaded from disk)."}, 1420 { 0, false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL } 1421}; 1422 1423 1424//------------------------------------------------------------------------- 1425// CommandObjectCommandsScriptAdd 1426//------------------------------------------------------------------------- 1427 1428class CommandObjectCommandsScriptAdd : public CommandObjectParsed 1429{ 1430public: 1431 CommandObjectCommandsScriptAdd(CommandInterpreter &interpreter) : 1432 CommandObjectParsed (interpreter, 1433 "command script add", 1434 "Add a scripted function as an LLDB command.", 1435 NULL), 1436 m_options (interpreter) 1437 { 1438 CommandArgumentEntry arg1; 1439 CommandArgumentData cmd_arg; 1440 1441 // Define the first (and only) variant of this arg. 1442 cmd_arg.arg_type = eArgTypeCommandName; 1443 cmd_arg.arg_repetition = eArgRepeatPlain; 1444 1445 // There is only one variant this argument could be; put it into the argument entry. 1446 arg1.push_back (cmd_arg); 1447 1448 // Push the data for the first argument into the m_arguments vector. 1449 m_arguments.push_back (arg1); 1450 } 1451 1452 ~CommandObjectCommandsScriptAdd () 1453 { 1454 } 1455 1456 virtual Options * 1457 GetOptions () 1458 { 1459 return &m_options; 1460 } 1461 1462protected: 1463 1464 class CommandOptions : public Options 1465 { 1466 public: 1467 1468 CommandOptions (CommandInterpreter &interpreter) : 1469 Options (interpreter) 1470 { 1471 } 1472 1473 virtual 1474 ~CommandOptions (){} 1475 1476 virtual Error 1477 SetOptionValue (uint32_t option_idx, const char *option_arg) 1478 { 1479 Error error; 1480 char short_option = (char) m_getopt_table[option_idx].val; 1481 1482 switch (short_option) 1483 { 1484 case 'f': 1485 m_funct_name = std::string(option_arg); 1486 break; 1487 case 's': 1488 m_synchronous = (ScriptedCommandSynchronicity) Args::StringToOptionEnum(option_arg, g_option_table[option_idx].enum_values, 0, error); 1489 if (!error.Success()) 1490 error.SetErrorStringWithFormat ("unrecognized value for synchronicity '%s'", option_arg); 1491 break; 1492 default: 1493 error.SetErrorStringWithFormat ("unrecognized option '%c'", short_option); 1494 break; 1495 } 1496 1497 return error; 1498 } 1499 1500 void 1501 OptionParsingStarting () 1502 { 1503 m_funct_name = ""; 1504 m_synchronous = eScriptedCommandSynchronicitySynchronous; 1505 } 1506 1507 const OptionDefinition* 1508 GetDefinitions () 1509 { 1510 return g_option_table; 1511 } 1512 1513 // Options table: Required for subclasses of Options. 1514 1515 static OptionDefinition g_option_table[]; 1516 1517 // Instance variables to hold the values for command options. 1518 1519 std::string m_funct_name; 1520 ScriptedCommandSynchronicity m_synchronous; 1521 }; 1522 1523private: 1524 class PythonAliasReader : public InputReaderEZ 1525 { 1526 private: 1527 CommandInterpreter& m_interpreter; 1528 std::string m_cmd_name; 1529 ScriptedCommandSynchronicity m_synchronous; 1530 StringList m_user_input; 1531 DISALLOW_COPY_AND_ASSIGN (PythonAliasReader); 1532 public: 1533 PythonAliasReader(Debugger& debugger, 1534 CommandInterpreter& interpreter, 1535 std::string cmd_name, 1536 ScriptedCommandSynchronicity synch) : 1537 InputReaderEZ(debugger), 1538 m_interpreter(interpreter), 1539 m_cmd_name(cmd_name), 1540 m_synchronous(synch), 1541 m_user_input() 1542 {} 1543 1544 virtual 1545 ~PythonAliasReader() 1546 { 1547 } 1548 1549 virtual void ActivateHandler(HandlerData& data) 1550 { 1551 StreamSP out_stream = data.GetOutStream(); 1552 bool batch_mode = data.GetBatchMode(); 1553 if (!batch_mode) 1554 { 1555 out_stream->Printf ("%s\n", g_python_command_instructions); 1556 if (data.reader.GetPrompt()) 1557 out_stream->Printf ("%s", data.reader.GetPrompt()); 1558 out_stream->Flush(); 1559 } 1560 } 1561 1562 virtual void ReactivateHandler(HandlerData& data) 1563 { 1564 StreamSP out_stream = data.GetOutStream(); 1565 bool batch_mode = data.GetBatchMode(); 1566 if (data.reader.GetPrompt() && !batch_mode) 1567 { 1568 out_stream->Printf ("%s", data.reader.GetPrompt()); 1569 out_stream->Flush(); 1570 } 1571 } 1572 virtual void GotTokenHandler(HandlerData& data) 1573 { 1574 StreamSP out_stream = data.GetOutStream(); 1575 bool batch_mode = data.GetBatchMode(); 1576 if (data.bytes && data.bytes_len) 1577 { 1578 m_user_input.AppendString(data.bytes, data.bytes_len); 1579 } 1580 if (!data.reader.IsDone() && data.reader.GetPrompt() && !batch_mode) 1581 { 1582 out_stream->Printf ("%s", data.reader.GetPrompt()); 1583 out_stream->Flush(); 1584 } 1585 } 1586 virtual void InterruptHandler(HandlerData& data) 1587 { 1588 StreamSP out_stream = data.GetOutStream(); 1589 bool batch_mode = data.GetBatchMode(); 1590 data.reader.SetIsDone (true); 1591 if (!batch_mode) 1592 { 1593 out_stream->Printf ("Warning: No script attached.\n"); 1594 out_stream->Flush(); 1595 } 1596 } 1597 virtual void EOFHandler(HandlerData& data) 1598 { 1599 data.reader.SetIsDone (true); 1600 } 1601 virtual void DoneHandler(HandlerData& data) 1602 { 1603 StreamSP out_stream = data.GetOutStream(); 1604 1605 ScriptInterpreter *interpreter = data.reader.GetDebugger().GetCommandInterpreter().GetScriptInterpreter(); 1606 if (!interpreter) 1607 { 1608 out_stream->Printf ("Script interpreter missing: no script attached.\n"); 1609 out_stream->Flush(); 1610 return; 1611 } 1612 std::string funct_name_str; 1613 if (!interpreter->GenerateScriptAliasFunction (m_user_input, 1614 funct_name_str)) 1615 { 1616 out_stream->Printf ("Unable to create function: no script attached.\n"); 1617 out_stream->Flush(); 1618 return; 1619 } 1620 if (funct_name_str.empty()) 1621 { 1622 out_stream->Printf ("Unable to obtain a function name: no script attached.\n"); 1623 out_stream->Flush(); 1624 return; 1625 } 1626 // everything should be fine now, let's add this alias 1627 1628 CommandObjectSP command_obj_sp(new CommandObjectPythonFunction(m_interpreter, 1629 m_cmd_name, 1630 funct_name_str.c_str(), 1631 m_synchronous)); 1632 1633 if (!m_interpreter.AddUserCommand(m_cmd_name, command_obj_sp, true)) 1634 { 1635 out_stream->Printf ("Unable to add selected command: no script attached.\n"); 1636 out_stream->Flush(); 1637 return; 1638 } 1639 } 1640 }; 1641 1642protected: 1643 bool 1644 DoExecute (Args& command, CommandReturnObject &result) 1645 { 1646 1647 if (m_interpreter.GetDebugger().GetScriptLanguage() != lldb::eScriptLanguagePython) 1648 { 1649 result.AppendError ("only scripting language supported for scripted commands is currently Python"); 1650 result.SetStatus (eReturnStatusFailed); 1651 return false; 1652 } 1653 1654 size_t argc = command.GetArgumentCount(); 1655 1656 if (argc != 1) 1657 { 1658 result.AppendError ("'command script add' requires one argument"); 1659 result.SetStatus (eReturnStatusFailed); 1660 return false; 1661 } 1662 1663 std::string cmd_name = command.GetArgumentAtIndex(0); 1664 1665 if (m_options.m_funct_name.empty()) 1666 { 1667 InputReaderSP reader_sp (new PythonAliasReader (m_interpreter.GetDebugger(), 1668 m_interpreter, 1669 cmd_name, 1670 m_options.m_synchronous)); 1671 1672 if (reader_sp) 1673 { 1674 1675 InputReaderEZ::InitializationParameters ipr; 1676 1677 Error err (reader_sp->Initialize (ipr.SetBaton(NULL).SetPrompt(" "))); 1678 if (err.Success()) 1679 { 1680 m_interpreter.GetDebugger().PushInputReader (reader_sp); 1681 result.SetStatus (eReturnStatusSuccessFinishNoResult); 1682 } 1683 else 1684 { 1685 result.AppendError (err.AsCString()); 1686 result.SetStatus (eReturnStatusFailed); 1687 } 1688 } 1689 else 1690 { 1691 result.AppendError("out of memory"); 1692 result.SetStatus (eReturnStatusFailed); 1693 } 1694 } 1695 else 1696 { 1697 CommandObjectSP new_cmd(new CommandObjectPythonFunction(m_interpreter, 1698 cmd_name, 1699 m_options.m_funct_name, 1700 m_options.m_synchronous)); 1701 if (m_interpreter.AddUserCommand(cmd_name, new_cmd, true)) 1702 { 1703 result.SetStatus (eReturnStatusSuccessFinishNoResult); 1704 } 1705 else 1706 { 1707 result.AppendError("cannot add command"); 1708 result.SetStatus (eReturnStatusFailed); 1709 } 1710 } 1711 1712 return result.Succeeded(); 1713 1714 } 1715 1716 CommandOptions m_options; 1717}; 1718 1719static OptionEnumValueElement g_script_synchro_type[] = 1720{ 1721 { eScriptedCommandSynchronicitySynchronous, "synchronous", "Run synchronous"}, 1722 { eScriptedCommandSynchronicityAsynchronous, "asynchronous", "Run asynchronous"}, 1723 { eScriptedCommandSynchronicityCurrentValue, "current", "Do not alter current setting"}, 1724 { 0, NULL, NULL } 1725}; 1726 1727OptionDefinition 1728CommandObjectCommandsScriptAdd::CommandOptions::g_option_table[] = 1729{ 1730 { LLDB_OPT_SET_1, false, "function", 'f', required_argument, NULL, 0, eArgTypePythonFunction, "Name of the Python function to bind to this command name."}, 1731 { LLDB_OPT_SET_1, false, "synchronicity", 's', required_argument, g_script_synchro_type, 0, eArgTypeScriptedCommandSynchronicity, "Set the synchronicity of this command's executions with regard to LLDB event system."}, 1732 { 0, false, NULL, 0, 0, NULL, 0, eArgTypeNone, NULL } 1733}; 1734 1735//------------------------------------------------------------------------- 1736// CommandObjectCommandsScriptList 1737//------------------------------------------------------------------------- 1738 1739class CommandObjectCommandsScriptList : public CommandObjectParsed 1740{ 1741private: 1742 1743public: 1744 CommandObjectCommandsScriptList(CommandInterpreter &interpreter) : 1745 CommandObjectParsed (interpreter, 1746 "command script list", 1747 "List defined scripted commands.", 1748 NULL) 1749 { 1750 } 1751 1752 ~CommandObjectCommandsScriptList () 1753 { 1754 } 1755 1756 bool 1757 DoExecute (Args& command, CommandReturnObject &result) 1758 { 1759 1760 m_interpreter.GetHelp(result, 1761 CommandInterpreter::eCommandTypesUserDef); 1762 1763 result.SetStatus (eReturnStatusSuccessFinishResult); 1764 1765 return true; 1766 1767 1768 } 1769}; 1770 1771//------------------------------------------------------------------------- 1772// CommandObjectCommandsScriptClear 1773//------------------------------------------------------------------------- 1774 1775class CommandObjectCommandsScriptClear : public CommandObjectParsed 1776{ 1777private: 1778 1779public: 1780 CommandObjectCommandsScriptClear(CommandInterpreter &interpreter) : 1781 CommandObjectParsed (interpreter, 1782 "command script clear", 1783 "Delete all scripted commands.", 1784 NULL) 1785 { 1786 } 1787 1788 ~CommandObjectCommandsScriptClear () 1789 { 1790 } 1791 1792protected: 1793 bool 1794 DoExecute (Args& command, CommandReturnObject &result) 1795 { 1796 1797 m_interpreter.RemoveAllUser(); 1798 1799 result.SetStatus (eReturnStatusSuccessFinishResult); 1800 1801 return true; 1802 } 1803}; 1804 1805//------------------------------------------------------------------------- 1806// CommandObjectCommandsScriptDelete 1807//------------------------------------------------------------------------- 1808 1809class CommandObjectCommandsScriptDelete : public CommandObjectParsed 1810{ 1811public: 1812 CommandObjectCommandsScriptDelete(CommandInterpreter &interpreter) : 1813 CommandObjectParsed (interpreter, 1814 "command script delete", 1815 "Delete a scripted command.", 1816 NULL) 1817 { 1818 CommandArgumentEntry arg1; 1819 CommandArgumentData cmd_arg; 1820 1821 // Define the first (and only) variant of this arg. 1822 cmd_arg.arg_type = eArgTypeCommandName; 1823 cmd_arg.arg_repetition = eArgRepeatPlain; 1824 1825 // There is only one variant this argument could be; put it into the argument entry. 1826 arg1.push_back (cmd_arg); 1827 1828 // Push the data for the first argument into the m_arguments vector. 1829 m_arguments.push_back (arg1); 1830 } 1831 1832 ~CommandObjectCommandsScriptDelete () 1833 { 1834 } 1835 1836protected: 1837 bool 1838 DoExecute (Args& command, CommandReturnObject &result) 1839 { 1840 1841 size_t argc = command.GetArgumentCount(); 1842 1843 if (argc != 1) 1844 { 1845 result.AppendError ("'command script delete' requires one argument"); 1846 result.SetStatus (eReturnStatusFailed); 1847 return false; 1848 } 1849 1850 const char* cmd_name = command.GetArgumentAtIndex(0); 1851 1852 if (cmd_name && *cmd_name && m_interpreter.HasUserCommands() && m_interpreter.UserCommandExists(cmd_name)) 1853 { 1854 m_interpreter.RemoveUser(cmd_name); 1855 result.SetStatus (eReturnStatusSuccessFinishResult); 1856 } 1857 else 1858 { 1859 result.AppendErrorWithFormat ("command %s not found", cmd_name); 1860 result.SetStatus (eReturnStatusFailed); 1861 } 1862 1863 return result.Succeeded(); 1864 1865 } 1866}; 1867 1868#pragma mark CommandObjectMultiwordCommandsScript 1869 1870//------------------------------------------------------------------------- 1871// CommandObjectMultiwordCommandsScript 1872//------------------------------------------------------------------------- 1873 1874class CommandObjectMultiwordCommandsScript : public CommandObjectMultiword 1875{ 1876public: 1877 CommandObjectMultiwordCommandsScript (CommandInterpreter &interpreter) : 1878 CommandObjectMultiword (interpreter, 1879 "command script", 1880 "A set of commands for managing or customizing script commands.", 1881 "command script <subcommand> [<subcommand-options>]") 1882 { 1883 LoadSubCommand ("add", CommandObjectSP (new CommandObjectCommandsScriptAdd (interpreter))); 1884 LoadSubCommand ("delete", CommandObjectSP (new CommandObjectCommandsScriptDelete (interpreter))); 1885 LoadSubCommand ("clear", CommandObjectSP (new CommandObjectCommandsScriptClear (interpreter))); 1886 LoadSubCommand ("list", CommandObjectSP (new CommandObjectCommandsScriptList (interpreter))); 1887 LoadSubCommand ("import", CommandObjectSP (new CommandObjectCommandsScriptImport (interpreter))); 1888 } 1889 1890 ~CommandObjectMultiwordCommandsScript () 1891 { 1892 } 1893 1894}; 1895 1896 1897#pragma mark CommandObjectMultiwordCommands 1898 1899//------------------------------------------------------------------------- 1900// CommandObjectMultiwordCommands 1901//------------------------------------------------------------------------- 1902 1903CommandObjectMultiwordCommands::CommandObjectMultiwordCommands (CommandInterpreter &interpreter) : 1904 CommandObjectMultiword (interpreter, 1905 "command", 1906 "A set of commands for managing or customizing the debugger commands.", 1907 "command <subcommand> [<subcommand-options>]") 1908{ 1909 LoadSubCommand ("source", CommandObjectSP (new CommandObjectCommandsSource (interpreter))); 1910 LoadSubCommand ("alias", CommandObjectSP (new CommandObjectCommandsAlias (interpreter))); 1911 LoadSubCommand ("unalias", CommandObjectSP (new CommandObjectCommandsUnalias (interpreter))); 1912 LoadSubCommand ("regex", CommandObjectSP (new CommandObjectCommandsAddRegex (interpreter))); 1913 LoadSubCommand ("history", CommandObjectSP (new CommandObjectCommandsHistory (interpreter))); 1914 LoadSubCommand ("script", CommandObjectSP (new CommandObjectMultiwordCommandsScript (interpreter))); 1915} 1916 1917CommandObjectMultiwordCommands::~CommandObjectMultiwordCommands () 1918{ 1919} 1920 1921